Fuse-plug.



FUSE FLUG.

APPUCA'HoN mm HDV. 23; 1915.

in@ @VfL-60?' Wit messes WILLIAM S. MACLEVVEE, OF YARILEY,

PENNSYLVANIA,

:l l: QE@

ASSIGNGR TO CARRIE 'HOWELL MACLEWEE, OF YARDLEY, PENNSYLVANA.

FUSE-PLUG..

Application filed November 3, 1915.

To all wlw/lt t may concern:

Be it known that l, VVILLrAM t5. MA@ Lrnvnn, a citizen of the United States, residing at Yardley, in the county of Bucks and State of Pennsylvania, Ahave invented certain new and useful Improvements in Fuse-Plugs, of which the following is a specilication.

My invention relates to improvements in fuse plugs and the object of my invention is to make a fuse plug which is simple in construction; which is non-breakable; and which can be manufactured at a very low cost, and a further object of my invention is to so construct the fuse plug that the fuse wire may be secured into place before the fuse plug is assembled. These together with various other novel features or construction and arrangements or" tl e parte which will be more fully hereinafter described and claimed constitute my invention.

Referring to the drawing; Figure l, is a perspective view of my improved fuse plug; Fig. 2 is a central vertical section of the fuse plug; Fig. 3, is a perspective view of the base part detached and Fig. l, is a vertical section of the several parte of the fuse plug detached.

ln the drawings in which like references refer to like parts, l represents the cylindrical body portion which is made of insulating material and preferably of liber..

lndentations 2, are formed in the upper end of the body portion l for the purpose of forming Ventilating spaces. Upon the upper end of the oody portion is placed a transparent disk 3, which is held in place by the apertured metal cap 4, having a corrugated cylindrical flange 5. The corrugations formed in the cylindrical flange 5 of the cap 4, form Ventilating spaces between the body portion l and the flange 5 oi. the cap. The cap 4. is secured upon the body portion 1, by the indentations 6, which force the metal of the cap into the fiber body portion and'securely hold the parts together.

The threaded shell 7, which is made of metal has an inwardly turned annular flange 8 upon the bottom thereof and upon which rests a ber disk 9, which carries the contact button 10, to which the fuse wire l2 is soldered. A Contact plate i3, which is formed integrally vwith the shell 7 is bent Specification of Letters Patent.

Patented @ic/t., 23., t., Serial No, 63,641.

inwardly and upon its inner end is soldered the other end of the fuse wire l2.

The cylindrical body portion l is providal with a longitudinal cut or slot lll, (see F si), into which the Contact plate lil, enters as shown in Figs. l and 2. The shell T, can be forced upon the lower end of the body portion so tightly that the parts arc securely held together, and it has been found in practice that it is unnecessary to provide any other :fastening means. The contact arm 13, which projects through the slot Ll formed in the body poiuion would in'event the shell from turning upon the body portion.

rllhe fiber disk 5), is larger in diameter than the end of the body portion l, so that the end of the latter presses against the edge of the disk 9 and securely holds the disk in place in the shell 7.

lt will he seen that the. fuse wire 12, can he. sol(4 ed at one end thereof to the contact button l0 before the parts are assenr bled, thus making sure that a goed connection or contact is rlhe disk 9 is then inserted into the shell 7 and the opposite end of the fuse wire l2 is soldered to the Contact arm lll, of the siiell, which operation can readily be donc as the parts are all accessible. The body portion is then in serted into the shell with the Contact arm 13 entering the slot ld formed in the body poi" tion and the shell and the body portion tightly forced together.

A tuse plug` is thus formed of few parts which can be readily assembled; which is strong and durable, properly ventilated and 'which can be inanul tured ata low cost.'

Having' thus described my invention l claim and desire Patent:

l. A fuse plug comprising a metal shell, -a disk oit insulating material inserted in the' shell, a Contact button c#aid disk, a contact plate projeetii'ig inwardly from the shell, a fuse wire between the Contact button and the said contact plate,` and a body portion having a slot formed therein to receive said Contact plate.

A fuse plug comprising metal shell, a contact plate formed integrally with the main part of the shell and bent inwardly, a .fuse wire attached to t ne inner end of :the contact plate, a body portion having a slot to secure by Letters iet formefl therein to embrace the sail Contact plate, and aiV Contact button 'located in 'the metal shell to which the oppoeute end of *die fuse wiie is attached.

3. A fuse plug Comprising a Cylindrical body portion having a longitudinal slot formed in one end thereof, a motui sheii Secured upon the end of the body poition having the said slot 'foi-ined therein, a Contact plate formed upon tho inner odge of the metal shell, said Contact plate extending inwardly through the siot 'foi-med in the body Leise/ie 

